When Ethereum Classic had its first noteworthy 51% attack, back in January 2019, Crypto Finance AG's Head of Research, Dr. Lewin Boehnke, felt obliged to record an 'Instant Emergency Education Session' for the team, to classify what happened and combat fear uncertainty doubt about that threatened to spread from this isolated event throughout the whole crypto asset ecosystem.

With now three 51% attacks happening on Ethereum Classic within just the last month, the attention is not that high anymore, and the attacks more a reflection of the overall state of ETC than a specific event.

Still, it seems like a good time to publish -outside the usual publication cycle every second Friday- this previously internal recording from 19 months ago. It is just as relevant now as on the day of recording.